吴缙,
解放军信息工程大学 ??郑州 ??450001
详细信息
作者简介:徐金甫：男，1965年生，教授，硕士生导师，研究方向为专业集成电路设计技术
吴缙：男，1994年生，硕士生，研究方向为专业集成电路设计技术
通讯作者:吴缙 woshi57890@163.com
中图分类号:TP331; TP309计量
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被引次数:0
出版历程
收稿日期:2018-04-28
修回日期:2018-09-21
网络出版日期:2018-10-22
刊出日期:2019-03-01
Frequency Sorting Algorithm Based on Dynamic Ring Oscillator Physical Unclonable Function Statistical Model
Jinfu XU,Jin WU,
The PLA Information Engineering University, Zhengzhou 450001, China
摘要
摘要:针对现有环形振荡器物理不可克隆函数(ROPUF)设计存在的可靠性和唯一性不高，导致在应用时安全性较差的问题，该文提出面向ROPUF的统计模型，定量分析了可靠性和唯一性的影响因素，发现增大延迟差能够提高可靠性，减小环形振荡器(RO)单元间的工艺差异可以提高唯一性。根据该模型结论，设计了基于mesh拓扑结构的动态RO单元，结合RO阵列频率分布特性，设计了一种新的频率排序算法，以增大延迟差和减小RO单元的工艺差异，从而提高ROPUF的可靠性和唯一性。结果表明，与其他改进设计的ROPUF相比，所提设计的可靠性和唯一性具有显著优势，可达到99.642%和49.1%，且受温度变化的影响最小。安全性分析证明，该文的设计具有很强的抗建模攻击能力。
关键词:信息安全/
物理不可克隆函数/
统计模型/
频率排序
Abstract:The existing Ring Oscillator (RO) Physical Unclonable Function (ROPUF) design has low reliability and uniqueness, resulting in poor application security. A statistical model for ROPUF is proposed, the factors of reliability and uniqueness are quantitatively analyzed, it is found that the larger delay difference can improve the reliability, and the lower process difference between RO units can improve the uniqueness. According to the conclusion of the model, a dynamic RO unit is designed based on the mesh topological structure. In combination with the frequency distribution characteristics of the RO array, a new frequency sorting algorithm is designed to increase the delay difference and reduce the process variation of the RO unit, thereby improving the reliability and uniqueness of ROPUF. The results show that compared with other improved ROPUF designs, the reliability and uniqueness of the proposed design has significant advantages, which can reach 99.642% and 49.1%, and temperature changes affect minimally them. It is verified by security analysis that the proposed design has strong anti-modeling attack capabilities.
Key words:Information security/
Physical Unclonable Function (PUF)/
Statistical model/
Frequency sorting
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